Re: ath12k & ath11k beacon miss detection

[Kalle Valo <kvalo@kernel.org>]

"Nicolas Escande" <nico.escande@gmail.com> writes:

> Hi there,
>
> I found that when using QCN9274 iun station mode, we never get disconnected from
> the AP even if it stops beaconning. Using iw I can see the "inactive time"
> increasing without supplicant ever getting a beacon miss event.
>
>>From what I gathered, given we set the flag CONNECTION_MONITOR using
> ieee80211_hw_set in __ath12k_mac_register (mac.c) we should detect the
> connection loss and call ieee80211_connection_loss() at some point. Right now,
> there is no such mecanism in ath12k.
>
> So looking at ath11k code I found out that in that driver we have a specific
> WMI event "WMI_ROAM_EVENTID" that can report a WMI_ROAM_REASON_BEACON_MISS that
> in turn ends up calling ieee80211_beacon_loss after some time.
>
> But trying ath11k & qcn9074 in station mode yielded the same result, we never
> get the roam event and never get disconnected either.
>
> So going back to ath10k this time, the code isn't exactly the same but even then
> we had the same wmi event, with the same WMI_ROAM_REASON_BEACON_MISS and we'd
> call ath10k_mac_handle_beacon_miss which in turn ends up calling
> ieee80211_beacon_loss via a work item.
>
> And using ath10k on qca9888 works well for me.
>
> So I have a few questions:
>   - is this supposed to work on ath11k ? Does it not work for me specifically
>     because of my chipset ?

Just a generic comment: QCN9074 and QCN9274 chipsets are designed for AP
use cases and their firmware tends to be lacking on station mode
features.

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